X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/20a8adb3d45a4419cd8c1de5e63f4b10ca190a3f..49e1672884bf8d50713812bdd4eca26ab2076711:/apt-pkg/contrib/configuration.cc diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc index 14a000fa5..376617401 100644 --- a/apt-pkg/contrib/configuration.cc +++ b/apt-pkg/contrib/configuration.cc @@ -15,24 +15,18 @@ ##################################################################### */ /*}}}*/ // Include files /*{{{*/ -#ifdef __GNUG__ -#pragma implementation "apt-pkg/configuration.h" -#endif +#include + #include #include #include #include -#include #include -#include #include #include - -#include -#include -#include -#include + +#include using namespace std; /*}}}*/ @@ -88,7 +82,7 @@ Configuration::~Configuration() /* This will lookup a single item by name below another item. It is a helper function for the main lookup function */ Configuration::Item *Configuration::Lookup(Item *Head,const char *S, - unsigned long Len,bool Create) + unsigned long const &Len,bool const &Create) { int Res = 1; Item *I = Head->Child; @@ -121,7 +115,7 @@ Configuration::Item *Configuration::Lookup(Item *Head,const char *S, // --------------------------------------------------------------------- /* This performs a fully scoped lookup of a given name, possibly creating new items */ -Configuration::Item *Configuration::Lookup(const char *Name,bool Create) +Configuration::Item *Configuration::Lookup(const char *Name,bool const &Create) { if (Name == 0) return Root->Child; @@ -176,38 +170,61 @@ string Configuration::Find(const char *Name,const char *Default) const */ string Configuration::FindFile(const char *Name,const char *Default) const { + const Item *RootItem = Lookup("RootDir"); + std::string result = (RootItem == 0) ? "" : RootItem->Value; + if(result.empty() == false && result[result.size() - 1] != '/') + result.push_back('/'); + const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) { - if (Default == 0) - return ""; - else - return Default; + if (Default != 0) + result.append(Default); } - - string val = Itm->Value; - while (Itm->Parent != 0 && Itm->Parent->Value.empty() == false) - { - // Absolute - if (val.length() >= 1 && val[0] == '/') - break; - - // ~/foo or ./foo - if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/') - break; - - // ../foo - if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/') - break; - - if (Itm->Parent->Value.end()[-1] != '/') - val.insert(0, "/"); + else + { + string val = Itm->Value; + while (Itm->Parent != 0) + { + if (Itm->Parent->Value.empty() == true) + { + Itm = Itm->Parent; + continue; + } - val.insert(0, Itm->Parent->Value); - Itm = Itm->Parent; + // Absolute + if (val.length() >= 1 && val[0] == '/') + { + if (val.compare(0, 9, "/dev/null") == 0) + val.erase(9); + break; + } + + // ~/foo or ./foo + if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/') + break; + + // ../foo + if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/') + break; + + if (Itm->Parent->Value.end()[-1] != '/') + val.insert(0, "/"); + + val.insert(0, Itm->Parent->Value); + Itm = Itm->Parent; + } + result.append(val); } - return val; + // do some normalisation by removing // and /./ from the path + size_t found = string::npos; + while ((found = result.find("/./")) != string::npos) + result.replace(found, 3, "/"); + while ((found = result.find("//")) != string::npos) + result.replace(found, 2, "/"); + + return result; } /*}}}*/ // Configuration::FindDir - Find a directory name /*{{{*/ @@ -217,14 +234,38 @@ string Configuration::FindDir(const char *Name,const char *Default) const { string Res = FindFile(Name,Default); if (Res.end()[-1] != '/') + { + size_t const found = Res.rfind("/dev/null"); + if (found != string::npos && found == Res.size() - 9) + return Res; // /dev/null returning return Res + '/'; + } return Res; } /*}}}*/ +// Configuration::FindVector - Find a vector of values /*{{{*/ +// --------------------------------------------------------------------- +/* Returns a vector of config values under the given item */ +vector Configuration::FindVector(const char *Name) const +{ + vector Vec; + const Item *Top = Lookup(Name); + if (Top == NULL) + return Vec; + + Item *I = Top->Child; + while(I != NULL) + { + Vec.push_back(I->Value); + I = I->Next; + } + return Vec; +} + /*}}}*/ // Configuration::FindI - Find an integer value /*{{{*/ // --------------------------------------------------------------------- /* */ -int Configuration::FindI(const char *Name,int Default) const +int Configuration::FindI(const char *Name,int const &Default) const { const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) @@ -241,7 +282,7 @@ int Configuration::FindI(const char *Name,int Default) const // Configuration::FindB - Find a boolean type /*{{{*/ // --------------------------------------------------------------------- /* */ -bool Configuration::FindB(const char *Name,bool Default) const +bool Configuration::FindB(const char *Name,bool const &Default) const { const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) @@ -303,6 +344,19 @@ void Configuration::CndSet(const char *Name,const string &Value) Itm->Value = Value; } /*}}}*/ +// Configuration::Set - Set an integer value /*{{{*/ +// --------------------------------------------------------------------- +/* */ +void Configuration::CndSet(const char *Name,int const Value) +{ + Item *Itm = Lookup(Name,true); + if (Itm == 0 || Itm->Value.empty() == false) + return; + char S[300]; + snprintf(S,sizeof(S),"%i",Value); + Itm->Value = S; +} + /*}}}*/ // Configuration::Set - Set a value /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -317,7 +371,7 @@ void Configuration::Set(const char *Name,const string &Value) // Configuration::Set - Set an integer value /*{{{*/ // --------------------------------------------------------------------- /* */ -void Configuration::Set(const char *Name,int Value) +void Configuration::Set(const char *Name,int const &Value) { Item *Itm = Lookup(Name,true); if (Itm == 0) @@ -330,7 +384,7 @@ void Configuration::Set(const char *Name,int Value) // Configuration::Clear - Clear an single value from a list /*{{{*/ // --------------------------------------------------------------------- /* */ -void Configuration::Clear(const string Name, int Value) +void Configuration::Clear(string const &Name, int const &Value) { char S[300]; snprintf(S,sizeof(S),"%i",Value); @@ -340,7 +394,7 @@ void Configuration::Clear(const string Name, int Value) // Configuration::Clear - Clear an single value from a list /*{{{*/ // --------------------------------------------------------------------- /* */ -void Configuration::Clear(const string Name, string Value) +void Configuration::Clear(string const &Name, string const &Value) { Item *Top = Lookup(Name.c_str(),false); if (Top == 0 || Top->Child == 0) @@ -371,7 +425,7 @@ void Configuration::Clear(const string Name, string Value) // Configuration::Clear - Clear an entire tree /*{{{*/ // --------------------------------------------------------------------- /* */ -void Configuration::Clear(string Name) +void Configuration::Clear(string const &Name) { Item *Top = Lookup(Name.c_str(),false); if (Top == 0) @@ -425,6 +479,7 @@ bool Configuration::ExistsAny(const char *Name) const string key = Name; if (key.size() > 2 && key.end()[-2] == '/') + { if (key.find_first_of("fdbi",key.size()-1) < key.size()) { key.resize(key.size() - 2); @@ -435,7 +490,7 @@ bool Configuration::ExistsAny(const char *Name) const { _error->Warning(_("Unrecognized type abbreviation: '%c'"), key.end()[-3]); } - + } return Exists(Name); } /*}}}*/ @@ -444,24 +499,80 @@ bool Configuration::ExistsAny(const char *Name) const /* Dump the entire configuration space */ void Configuration::Dump(ostream& str) { - /* Write out all of the configuration directives by walking the + Dump(str, NULL, "%f \"%v\";\n", true); +} +void Configuration::Dump(ostream& str, char const * const root, + char const * const formatstr, bool const emptyValue) +{ + const Configuration::Item* Top = Tree(root); + if (Top == 0) + return; + const Configuration::Item* const Root = (root == NULL) ? NULL : Top; + std::vector const format = VectorizeString(formatstr, '%'); + + /* Write out all of the configuration directives by walking the configuration tree */ - const Configuration::Item *Top = Tree(0); - for (; Top != 0;) - { - str << Top->FullTag() << " \"" << Top->Value << "\";" << endl; - + do { + if (emptyValue == true || Top->Value.empty() == emptyValue) + { + std::vector::const_iterator f = format.begin(); + str << *f; + for (++f; f != format.end(); ++f) + { + if (f->empty() == true) + { + ++f; + str << '%' << *f; + continue; + } + char const type = (*f)[0]; + if (type == 'f') + str << Top->FullTag(); + else if (type == 't') + str << Top->Tag; + else if (type == 'v') + str << Top->Value; + else if (type == 'F') + str << QuoteString(Top->FullTag(), "=\"\n"); + else if (type == 'T') + str << QuoteString(Top->Tag, "=\"\n"); + else if (type == 'V') + str << QuoteString(Top->Value, "=\"\n"); + else if (type == 'n') + str << "\n"; + else if (type == 'N') + str << "\t"; + else + str << '%' << type; + str << f->c_str() + 1; + } + } + if (Top->Child != 0) { Top = Top->Child; continue; } - + while (Top != 0 && Top->Next == 0) Top = Top->Parent; if (Top != 0) Top = Top->Next; - } + + if (Root != NULL) + { + const Configuration::Item* I = Top; + while(I != 0) + { + if (I == Root) + break; + else + I = I->Parent; + } + if (I == 0) + break; + } + } while (Top != 0); } /*}}}*/ @@ -485,15 +596,14 @@ string Configuration::Item::FullTag(const Item *Stop) const sections like 'zone "foo.org" { .. };' This causes each section to be added in with a tag like "zone::foo.org" instead of being split tag/value. AsSectional enables Sectional parsing.*/ -bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, - unsigned Depth) +bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectional, + unsigned const &Depth) { // Open the stream for reading ifstream F(FName.c_str(),ios::in); if (!F != 0) return _error->Errno("ifstream::ifstream",_("Opening configuration file %s"),FName.c_str()); - - char Buffer[1024]; + string LineBuffer; string Stack[100]; unsigned int StackPos = 0; @@ -505,23 +615,64 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, bool InComment = false; while (F.eof() == false) { - F.getline(Buffer,sizeof(Buffer)); + // The raw input line. + std::string Input; + // The input line with comments stripped. + std::string Fragment; + + // Grab the next line of F and place it in Input. + do + { + char *Buffer = new char[1024]; + + F.clear(); + F.getline(Buffer,sizeof(Buffer) / 2); + + Input += Buffer; + delete[] Buffer; + } + while (F.fail() && !F.eof()); + + // Expand tabs in the input line and remove leading and trailing + // whitespace. + { + const int BufferSize = Input.size() * 8 + 1; + char *Buffer = new char[BufferSize]; + try + { + memcpy(Buffer, Input.c_str(), Input.size() + 1); + + _strtabexpand(Buffer, BufferSize); + _strstrip(Buffer); + Input = Buffer; + } + catch(...) + { + delete[] Buffer; + throw; + } + delete[] Buffer; + } CurLine++; - // This should be made to work instead, but this is better than looping - if (F.fail() && !F.eof()) - return _error->Error(_("Line %d too long (max %d)"), CurLine, sizeof(Buffer)); - _strtabexpand(Buffer,sizeof(Buffer)); - _strstrip(Buffer); + // Now strip comments; if the whole line is contained in a + // comment, skip this line. + + // The first meaningful character in the current fragment; will + // be adjusted below as we remove bytes from the front. + std::string::const_iterator Start = Input.begin(); + // The last meaningful character in the current fragment. + std::string::const_iterator End = Input.end(); // Multi line comment if (InComment == true) { - for (const char *I = Buffer; *I != 0; I++) + for (std::string::const_iterator I = Start; + I != End; ++I) { - if (*I == '*' && I[1] == '/') + if (*I == '*' && I + 1 != End && I[1] == '/') { - memmove(Buffer,I+2,strlen(I+2) + 1); + Start = I + 2; InComment = false; break; } @@ -532,57 +683,68 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, // Discard single line comments bool InQuote = false; - for (char *I = Buffer; *I != 0; I++) + for (std::string::const_iterator I = Start; + I != End; ++I) { if (*I == '"') InQuote = !InQuote; if (InQuote == true) continue; - - if (*I == '/' && I[1] == '/') - { - *I = 0; + + if ((*I == '/' && I + 1 != End && I[1] == '/') || + (*I == '#' && strcmp(string(I,I+6).c_str(),"#clear") != 0 && + strcmp(string(I,I+8).c_str(),"#include") != 0)) + { + End = I; break; } } - // Look for multi line comments + // Look for multi line comments and build up the + // fragment. + Fragment.reserve(End - Start); InQuote = false; - for (char *I = Buffer; *I != 0; I++) + for (std::string::const_iterator I = Start; + I != End; ++I) { if (*I == '"') InQuote = !InQuote; if (InQuote == true) - continue; - - if (*I == '/' && I[1] == '*') + Fragment.push_back(*I); + else if (*I == '/' && I + 1 != End && I[1] == '*') { InComment = true; - for (char *J = Buffer; *J != 0; J++) + for (std::string::const_iterator J = I; + J != End; ++J) { - if (*J == '*' && J[1] == '/') + if (*J == '*' && J + 1 != End && J[1] == '/') { - memmove(I,J+2,strlen(J+2) + 1); + // Pretend we just finished walking over the + // comment, and don't add anything to the output + // fragment. + I = J + 1; InComment = false; break; } } if (InComment == true) - { - *I = 0; - break; - } + break; } + else + Fragment.push_back(*I); } - - // Blank - if (Buffer[0] == 0) + + // Skip blank lines. + if (Fragment.empty()) continue; - // We now have a valid line fragment + // The line has actual content; interpret what it means. InQuote = false; - for (char *I = Buffer; *I != 0;) + Start = Fragment.begin(); + End = Fragment.end(); + for (std::string::const_iterator I = Start; + I != End; ++I) { if (*I == '"') InQuote = !InQuote; @@ -590,18 +752,21 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, if (InQuote == false && (*I == '{' || *I == ';' || *I == '}')) { // Put the last fragment into the buffer - char *Start = Buffer; - char *Stop = I; - for (; Start != I && isspace(*Start) != 0; Start++); - for (; Stop != Start && isspace(Stop[-1]) != 0; Stop--); - if (LineBuffer.empty() == false && Stop - Start != 0) + std::string::const_iterator NonWhitespaceStart = Start; + std::string::const_iterator NonWhitespaceStop = I; + for (; NonWhitespaceStart != I && isspace(*NonWhitespaceStart) != 0; ++NonWhitespaceStart) + ; + for (; NonWhitespaceStop != NonWhitespaceStart && isspace(NonWhitespaceStop[-1]) != 0; --NonWhitespaceStop) + ; + if (LineBuffer.empty() == false && NonWhitespaceStop - NonWhitespaceStart != 0) LineBuffer += ' '; - LineBuffer += string(Start,Stop - Start); - - // Remove the fragment + LineBuffer += string(NonWhitespaceStart, NonWhitespaceStop); + + // Drop this from the input string, saving the character + // that terminated the construct we just closed. (i.e., a + // brace or a semicolon) char TermChar = *I; - memmove(Buffer,I + 1,strlen(I + 1) + 1); - I = Buffer; + Start = I + 1; // Syntax Error if (TermChar == '{' && LineBuffer.empty() == true) @@ -646,7 +811,7 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, // Go down a level if (TermChar == '{') { - if (StackPos <= 100) + if (StackPos < sizeof(Stack)/sizeof(std::string)) Stack[StackPos++] = ParentTag; /* Make sectional tags incorperate the section into the @@ -703,6 +868,8 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, else return _error->Error(_("Syntax error %s:%u: Unsupported directive '%s'"),FName.c_str(),CurLine,Tag.c_str()); } + else if (Tag.empty() == true && NoWord == false && Word == "#clear") + return _error->Error(_("Syntax error %s:%u: clear directive requires an option tree as argument"),FName.c_str(),CurLine); else { // Set the item in the configuration class @@ -723,15 +890,32 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, } } - else - I++; } - // Store the fragment - const char *Stripd = _strstrip(Buffer); - if (*Stripd != 0 && LineBuffer.empty() == false) - LineBuffer += " "; - LineBuffer += Stripd; + // Store the remaining text, if any, in the current line buffer. + + // NB: could change this to use string-based operations; I'm + // using strstrip now to ensure backwards compatibility. + // -- dburrows 2008-04-01 + { + char *Buffer = new char[End - Start + 1]; + try + { + std::copy(Start, End, Buffer); + Buffer[End - Start] = '\0'; + + const char *Stripd = _strstrip(Buffer); + if (*Stripd != 0 && LineBuffer.empty() == false) + LineBuffer += " "; + LineBuffer += Stripd; + } + catch(...) + { + delete[] Buffer; + throw; + } + delete[] Buffer; + } } if (LineBuffer.empty() == false) @@ -742,44 +926,67 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional, // ReadConfigDir - Read a directory of config files /*{{{*/ // --------------------------------------------------------------------- /* */ -bool ReadConfigDir(Configuration &Conf,const string &Dir,bool AsSectional, - unsigned Depth) -{ - DIR *D = opendir(Dir.c_str()); - if (D == 0) - return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str()); - - vector List; - - for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) - { - if (Ent->d_name[0] == '.') - continue; - - // Skip bad file names ala run-parts - const char *C = Ent->d_name; - for (; *C != 0; C++) - if (isalpha(*C) == 0 && isdigit(*C) == 0 && *C != '_' && *C != '-') - break; - if (*C != 0) - continue; - - // Make sure it is a file and not something else - string File = flCombine(Dir,Ent->d_name); - struct stat St; - if (stat(File.c_str(),&St) != 0 || S_ISREG(St.st_mode) == 0) - continue; - - List.push_back(File); - } - closedir(D); - - sort(List.begin(),List.end()); +bool ReadConfigDir(Configuration &Conf,const string &Dir, + bool const &AsSectional, unsigned const &Depth) +{ + vector const List = GetListOfFilesInDir(Dir, "conf", true, true); // Read the files - for (vector::const_iterator I = List.begin(); I != List.end(); I++) + for (vector::const_iterator I = List.begin(); I != List.end(); ++I) if (ReadConfigFile(Conf,*I,AsSectional,Depth) == false) return false; return true; } /*}}}*/ +// MatchAgainstConfig Constructor /*{{{*/ +Configuration::MatchAgainstConfig::MatchAgainstConfig(char const * Config) +{ + std::vector const strings = _config->FindVector(Config); + for (std::vector::const_iterator s = strings.begin(); + s != strings.end(); ++s) + { + regex_t *p = new regex_t; + if (regcomp(p, s->c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB) == 0) + patterns.push_back(p); + else + { + regfree(p); + delete p; + _error->Warning("Invalid regular expression '%s' in configuration " + "option '%s' will be ignored.", + s->c_str(), Config); + continue; + } + } + if (strings.empty() == true) + patterns.push_back(NULL); +} + /*}}}*/ +// MatchAgainstConfig Destructor /*{{{*/ +Configuration::MatchAgainstConfig::~MatchAgainstConfig() +{ + clearPatterns(); +} +void Configuration::MatchAgainstConfig::clearPatterns() +{ + for(std::vector::const_iterator p = patterns.begin(); + p != patterns.end(); ++p) + { + if (*p == NULL) continue; + regfree(*p); + delete *p; + } + patterns.clear(); +} + /*}}}*/ +// MatchAgainstConfig::Match - returns true if a pattern matches /*{{{*/ +bool Configuration::MatchAgainstConfig::Match(char const * str) const +{ + for(std::vector::const_iterator p = patterns.begin(); + p != patterns.end(); ++p) + if (*p != NULL && regexec(*p, str, 0, 0, 0) == 0) + return true; + + return false; +} + /*}}}*/